JP2002039210A - Structure and method for reducing eccentricity of assembly of torque limiter portion in torque fluctuation absorbing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a torque fluctuation absorbing apparatus capable of reducing the eccentricity of assembly of a torque limiter portion and a method therefor. SOLUTION: In this structure, a lining portion 31 of the torque limiter 30 is separated from drive plates 21, a lining supporting plate 35 is disposed to the torque limiter 30, and the lining portion 31 is fixed to the supporting plate 35, and the lining portion 31 is sandwiched between the drive plates 21. In another structure, the lining portion 31 of the torque limiter 30 is fixed to the drive plates 21 of a damper, a damper cover 32 is disposed to the torque limiter 30, and the lining portion 31 is sandwiched between the damper covers 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eccentricity reducing structure and a method for assembling a torque limiter of a torque fluctuation absorbing device.

[0002]

2. Description of the Related Art A torque fluctuation absorbing device is connected between an engine crankshaft and an input shaft of a driven side (for example, a transmission containing a motor of a hybrid vehicle) to reduce engine torque fluctuation. I have.
As shown in FIGS. 9 and 10, a conventional torque fluctuation absorber 1 includes a flywheel 10 connected to a crankshaft 2 of an engine and a torque transmission path between the flywheel 10 and a driven input shaft 3. A damper assembly 20 having a pair of drive plates 21, a driven plate 22, and a spring damper 24, and a pair of lining portions 31 and a damper cover 32 arranged in a torque transmission path between the flywheel 10 and the damper assembly 20. And a torque limiter 30 that generates a slip when a torque equal to or more than a predetermined value is applied.
The pair of lining portions 31 are fixed to both surfaces of the outer peripheral portion of the drive plate 21 (or a member fixed thereto), and the pair of lining portions 31 are sandwiched between the damper cover 32 and the flywheel 10 and have a torque equal to or greater than a certain value. The slip that occurs when the contact is applied occurs on the contact surface between the damper cover 32 and the flywheel 10 of the lining portion 31. Further, the drive plate 21 and the driven plate 22 are relatively rotatable in the circumferential direction, and are slightly spaced in the radial direction (a bush 23 provided between the drive plate 21 and the driven plate 22).
, Drive plate 21 and driven plate 22
And there is play in the radial direction. A radial gap d is provided between the outer periphery of the drive plate 21 (or a member fixed thereto) and the inner periphery of the flywheel 10 so as to absorb the play and the assembly error. The procedure for assembling the conventional torque fluctuation absorber 1 is as follows.
It is as follows. The jig 50 is used to align the hub 24 of the driven plate 22 of the damper assembly 20 and the crankshaft 2 with the engine assembly. The damper cover 32 is bolted to the flywheel 10, the lining 31 fixed to the drive plate 21 is sandwiched between the damper cover 32 and the flywheel 10, and the damper assembly 20 is held. The engine assembly and the driven-side assembly are docked to fix the engine assembly and the driven-side assembly.

[0003]

However, the conventional apparatus has the following problems. Since there is a radial gap between the drive plate and the driven plate, when assembling the torque fluctuation absorber to the engine assembly,
Even if the driven plate is centered on the engine assembly using a jig, the drive plate is radially eccentric with the flywheel within the space of the flywheel, and as a result, the torque limiter fixed to the drive plate The lining portion is also eccentric in the radial direction with respect to the flywheel. If the torque limiter is eccentrically assembled,
After the engine assembly and the driven-side assembly are docked and fixed, and the engine is rotated,
When the rotation angle reaches the point where the radial gap between the drive plate and the driven plate is filled, the eccentricity is transmitted to the input shaft of the driven assembly, causing rotational shake, and causing the input shaft of the driven assembly to rotate. The bearing 60 that is supported is twisted to shorten the life of the bearing, shorten the life of the bush 61 (the bush may be a needle bearing) that is in rotational sliding contact with the input shaft, and slide contact with the driven input shaft. Oil seal 62
Problems such as reduced performance. (FIG. 9) An object of the present invention is to provide a structure and a method (assembly method) that can reduce the eccentricity of assembling the torque limiter portion of the torque fluctuation absorbing device.

[0004]

The structure and method of the present invention for achieving the above object are as follows. [Structure] A flywheel connected to a crankshaft of an engine, a damper assembly disposed in a torque transmission path between the flywheel and a driven input shaft and having a pair of drive plates, a driven plate, and a spring damper; A torque limiter disposed at a torque transmission path between the wheel and the damper assembly, the torque limiter having a pair of lining portions and causing a slip when a torque of a predetermined value or more is applied, (1) to (6), wherein the misalignment is reduced. (1) The lining portion of the torque limiter is separated from the drive plate of the damper, a lining support plate is provided on the torque limiter, the lining portion is fixed to the support plate, and the lining portion is sandwiched between the drive plates. A torque fluctuation absorber that aligns the lining part with the flywheel to form a damper / torque limiter assembly, and centers the lining support plate on the flywheel and secures the damper / torque limiter assembly to the lining support plate. Eccentricity reduction structure with torque limiter assembly. Here, between the drive plate and the flywheel, a bush for supporting both members is provided in a radial gap portion. Alternatively, between the drive plate and the damper cover, a bush that supports both members is provided in a radial gap. Thereby, the eccentricity between the flywheel and the drive plate can be reduced, and the eccentricity of the lining portion of the torque limiter portion centered via the drive plate is reduced. (2) The lining of the torque limiter is fixed to the drive plate of the damper, the damper cover is provided on the torque limiter, the lining is sandwiched between the damper covers, and the drive plate and the damper cover are centered and assembled. A torque limiter assembly, a damper cover is centered on the flywheel, and the damper / torque limiter assembly is fixed to the flywheel at the damper cover. (3) The lining portion of the torque limiter is fixed to a drive plate, the lining portion is sandwiched between a damper cover and a flywheel, which constitute a part of the torque limiter, and the flywheel is formed between the flywheel body and the flywheel plate. Bolt fastening structure, drive plate, lining part, damper cover centered on the flywheel body and assembled to form a flywheel body with damper assembly and torque limiter, then docked and fixed the engine and the driven side, Next, the eccentricity reducing structure of the torque limiter part of the torque fluctuation absorber, in which the flywheel body with the damper assembly and torque limiter is bolted to the flywheel plate fixed to the crankshaft. (4) An axial projection is provided at the tip of the driven input shaft, a bearing is fitted into a recess at the tip of the crankshaft, and the axial projection is projected into the inner periphery of the bearing.
An eccentricity reducing structure in which a torque limiter unit of a torque fluctuation absorbing device is provided with an elastic material provided between a bearing and a crankshaft or an axial protrusion. (5) A torque fluctuation absorbing device in which a bearing is disposed in a concave portion at a tip end portion of a crankshaft, and a drive plate is supported by a drive plate support member having one end fitted to the inner periphery of the bearing and the other end fixed to the drive plate. Eccentricity reduction structure with torque limiter assembly. (6) A torque fluctuation absorbing device in which a bearing is disposed in a concave portion at a tip end portion of a crankshaft, and a driven plate is supported by a driven plate support member having one end fitted to the inner periphery of the bearing and the other end fixed to the driven plate. Eccentricity reduction structure with torque limiter assembly. [Method] A flywheel connected to a crankshaft of an engine, a damper assembly disposed on a torque transmission path between the flywheel and a driven input shaft and having a pair of drive plates, a driven plate, and a spring damper; A torque limiter disposed at a torque transmission path between the wheel and the damper assembly, the torque limiter having a pair of lining portions and causing a slip when a torque of a predetermined value or more is applied, (7) A method for reducing the misalignment that occurs in any one of the following (7) to (10). (7) The drive plate and the driven plate to which the lining portion is fixed are temporarily centered on each other with pins, and then the damper assembly on which the drive plate and the driven plate are centered is centered on the flywheel using a jig. A method for reducing the eccentricity of the torque limiter assembly of the torque fluctuation absorber, by pulling out and fixing the damper assembly to the flywheel with the damper cover of the torque limiter. (8) Center the drive plate with the lining fixed on the flywheel with a jig, and fly the damper assembly centered on the flywheel with the damper cover that forms part of the torque limiter. A method for reducing the eccentricity of assembling the torque limiter part of the torque fluctuation absorbing device fixed to the wheel. (9) A method for reducing eccentricity in assembling a torque limiter portion of a torque fluctuation absorber, in which, after docking an engine and a driven side, a resonance is forcibly generated by control to cause slippage in a torque limiter. (10) A method for reducing eccentricity in assembling a torque limiter portion of a torque fluctuation absorbing device, in which, after docking an engine and a driven side, a torque generated by a torque limiter is temporarily reduced to cause a slip in the torque limiter.

In the torque eccentricity reducing structure of the torque fluctuation absorbing device of (1), the lining portion is separated from the drive plate, the lining portion is sandwiched between the drive plates, and the drive plate and the lining portion are separated. The drive plate, lining, and flywheel are concentric, preventing eccentricity in the torque limiter during assembly. it can. In the torque eccentricity reducing structure for assembling the torque limiter portion of the torque fluctuation absorbing device of the above (2), the lining portion is fixed to the drive plate,
Leave the lining part between the damper covers,
The drive plate, damper cover and the damper / torque limiter assembly are assembled and fixed to the flywheel, so the drive plate, lining part and flywheel are concentric and eccentric to the torque limiter part during assembly Can be prevented from occurring. In the torque eccentricity reducing structure of the torque fluctuation absorbing device of (3) above, the flywheel is a bolt fastening structure between the flywheel body and the flywheel plate, and the drive plate and the lining part are mounted on the flywheel body. The flywheel body with the damper assembly and torque limiter, which is centered and assembled, is bolted to the flywheel plate, so that the drive plate, lining part, and flywheel are concentric and biased toward the torque limiter during assembly. The formation of a core can be prevented. In the eccentricity reducing structure for assembling the torque limiter portion of the torque fluctuation absorber of the above (4), the axially projecting portion of the driven input shaft is made to protrude into the inner peripheral portion of the bearing in the concave portion at the tip end of the crankshaft.
Even if eccentricity occurs in the torque limiter part during assembly, the torsion load generated on the driven side input shaft due to eccentricity can be received not only by the support bearing of the driven side input shaft but also by the bearing in the recess at the tip end of the crankshaft. Therefore, the load can be dispersed, the torsion applied to the support bearing of the driven input shaft can be reduced, and the life can be extended. In the torque eccentricity reducing structure of the torque fluctuation absorbing device of (5), the drive plate to which the lining portion is fixed is supported from the crankshaft, so that the drive plate and the lining portion are the same with respect to the crankshaft. As a core, it is possible to prevent the occurrence of eccentricity in the torque limiter portion during assembly. The above (6)
In the structure for reducing the eccentricity of the torque limiter part of the torque fluctuation absorber of the present invention, the driven plate is supported from the crankshaft. Therefore, even if the eccentricity occurs in the torque limiter part during assembly, the eccentricity occurs on the driven input shaft. The prying load can be received not only by the support bearing of the driven input shaft but also by the crankshaft, whereby the load can be dispersed, the prying applied to the support bearing of the driven input shaft can be reduced, and the life can be extended. In the method (7) for reducing the eccentricity of assembling the torque limiter portion of the torque fluctuation absorbing device, the drive plate and the driven plate to which the lining portion is fixed are temporarily centered on each other with pins, and then the damper assembly is fixed to the jig. The drive plate and lining are concentric with the crankshaft, preventing eccentricity in the torque limiter during assembly. it can. In the method (8) for reducing the eccentricity of assembling the torque limiter portion of the torque fluctuation absorbing device, the drive plate to which the lining portion is fixed is centered on the flywheel with a jig, and then the damper assembly is flywheeled with the damper cover. , The drive plate and the lining portion are concentric with the crankshaft, thereby preventing eccentricity at the torque limiter portion during assembly. In the method (9) for reducing the eccentricity in assembling the torque limiter portion of the torque fluctuation absorbing device, after docking the engine and the driven side, forcibly causing resonance by control and causing the torque limiter to slip.
The drive plate with the lining part moves in the direction in which the eccentricity in the lining part becomes smaller while sliding occurs,
Even if eccentricity occurs in the torque limiter part at the time of assembly, automatic alignment is performed. In the torque eccentricity reducing method for assembling the torque limiter portion of the torque fluctuation absorbing device according to the above (10), after the engine and the driven side are docked, the torque generated by the torque limiter is temporarily reduced to cause the torque limiter to slip. Therefore, the drive plate with the lining part moves in the direction in which the eccentricity in the lining part is reduced while the slippage is occurring, and the eccentricity is automatically adjusted even if the eccentricity occurs in the torque limiter part at the time of assembly. After the slip, the slip limit torque of the torque limiter is returned to the original value again.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure and method for reducing the eccentricity of a torque fluctuation absorbing device according to the present invention will be described below with reference to FIGS. FIG. 1 shows a first embodiment of the present invention, FIG. 2 shows a second embodiment of the present invention, and FIG.
4 shows a third embodiment of the present invention, FIG. 4 shows a fourth embodiment of the present invention, the upper half of FIG. 5 shows a fifth embodiment of the present invention, and the lower half of FIG. 5 shows a sixth embodiment of the present invention. 6 shows a seventh embodiment of the present invention, FIG. 7 shows an eighth embodiment of the present invention, and FIG.
It can be applied to any of them. In addition, parts common or similar to all the embodiments of the present invention are denoted by the same reference numerals throughout all the embodiments of the present invention. In addition, the same reference numerals as those in FIGS. 9 and 10 are given to the structural parts corresponding to the conventional structure. First, portions common or similar to all the embodiments of the present invention will be described with reference to, for example, FIGS.

The torque from the engine crankshaft 2 is transmitted to the driven input shaft 3 via the torque fluctuation absorbing device 1. The torque fluctuation absorbing device 1 includes a flywheel 1
At 0, it is connected to the crankshaft 2 of the engine, and is spline-fitted to the driven input shaft 3 at the hub portion 22a of the driven plate 22. The driven side is, for example, an engine /
Hybrid electric motor transmission (T
/ M). The transmission (T / M) includes an input shaft 3, an electric motor connected to the input shaft 3 via a planetary gear device, a charging generator, a bearing 60 that rotatably supports the input shaft 3, a bush 61 (a bush). May be a needle bearing), T / M casing 63,
An oil seal 62 for sealing the input shaft 3 and the T / M casing 63 is provided (see FIG. 9).

The torque fluctuation absorbing device 1 of the present invention to which the structure or method for reducing the eccentricity of assembling the torque limiter of the present invention is applied. The flywheel 10 is connected to the crankshaft 2 of the engine, and the flywheel 10 is driven by the flywheel 10. A damper assembly 20 disposed in a torque transmission path between the side input shaft 3 and a pair of a drive plate 21, a driven plate 22, and a spring damper 24;
A torque limiter 30 disposed in a torque transmission path between the flywheel 10 and the damper assembly 20 and having a pair of (or at least one) lining portions 31 and causing a slip when a torque of a predetermined value or more is applied. I have.

The flywheel 10 may be integral or may have a structure in which the flywheel body 11 and the flywheel plate 12 are fastened by bolts 13.
The flywheel 10 works as a mass of the vibration system.

In the damper assembly 20, the drive plate 21 and the driven plate 22 can rotate relative to each other in the direction of rotation. The pair of drive plates 21 has a plurality of windows extending in the circumferential direction.
A spring damper 24 is arranged and supported by the window. The driven plate 22 includes the hub 22a and the hub 22.
a, which extends radially outwardly from a. The arm 22 b extends between adjacent spring dampers 24. When the drive plate 21 rotates relatively to the driven plate 22 and the spring damper 24 is pressed by the arm 22b, one end of the spring damper 24 separates from the window of the drive plate 21 and the spring damper 24 bends. Work as a spring. The driven plate 22 is a hub 22a.
A bush 23 is disposed between the bush 23 and the drive plate 21, and there is a small gap between the bush 23 and the hub 22 a and the drive plate 21 to allow rotation. Conventionally, when the torque fluctuation absorbing device 10 is mounted on an engine, this gap is formed by the torque limiter 30.
The eccentricity was caused in the assembly.

The torque limiter 30 has a pair of (or at least one) lining portions 31, a damper cover 32 for holding the lining portions 31, a holding plate 33, and a disc spring 34. A constant pressing force for obtaining a constant value of torque is obtained by the disc spring 34. When the torque equal to or more than the predetermined value is applied, the lining portion 31 slides between the counter member and the transmission of the torque equal to or more than the predetermined value.

Next, the structure or method for reducing the eccentricity of assembling the torque limiter unit of the present invention, which is unique to each embodiment,
The operation will be described. Embodiment 1 In Embodiment 1 of the present invention, as shown in FIG. 1, a lining portion 31 of a torque limiter 30 is separated from a drive plate 21 of a damper, and a lining support plate 35 is provided on the torque limiter 30 to provide a lining portion. 31 is fixed to the lining support plate 35, and the lining portion 31 is sandwiched between a pair of drive plates 21. The lining portions 31 are fixed to both surfaces of the lining support plate 35, and are positioned between the pair of drive plates 21.
A lining portion 31 is sandwiched between a drive plate 21 and a pressing plate 33 supported on another drive plate 21 via a disc spring 34. Here, a bush 54 that supports both members is provided between the drive plate 21 and the flywheel 10 in a radial gap. Alternatively, a bush 54 for supporting both members is provided between the drive plate 21 and the damper cover 32 in a radial gap. Thereby, the eccentricity between the flywheel 10 and the drive plate 21 can be reduced, and the eccentricity of the lining portion of the torque limiter portion centered via the drive plate 21 is reduced. The bush 54 has a ring shape and is made of, for example, a resin.
Is pressed into or bonded to any of the flywheels 10. The assembling procedure is as follows. The drive plate 21 and the lining portion 31 are centered and assembled to form a damper / torque limiter assembly. The lining support plate 35 is centered on the flywheel 10 with the pin 36 and the bolt 37
And the damper / torque limiter assembly is fixed to the flywheel 10 at the lining support plate 35.

With respect to the operation of the first embodiment, the lining portion 31 is separated from the drive plate 21, and the lining portion 31 is sandwiched between the drive plates 21.
Since the damper / torque limiter assembly in which the drive plate 21 and the lining portion 31 are centered and assembled is fixed to the flywheel 10, the drive plate 21, the lining portion 31, and the flywheel 1 are fixed.
0 is concentric, which can prevent eccentricity at the torque limiter 30 at the time of assembly. Driven plate 2
2 is naturally positioned by the driven side 3 when the engine assembly and the driven side assembly are docked.

Embodiment 2 In Embodiment 2 of the present invention, FIG.
As shown in the figure, the lining section 3 of the torque limiter 30
1 is fixed to the drive plate 21 of the damper, the torque limiter 30 is provided with a pair of damper covers 32, and the lining portion 31 is sandwiched between the damper covers 32. The lining portion 31 fixed to the drive plate 21 is sandwiched between one damper cover 32 and 33 provided inside the other damper cover 32 via a disc spring 34. Here, drive plate 2
A bush 54 for supporting both members is provided in a radial gap between the flywheel 1 and the flywheel 10. Alternatively, between the drive plate 21 and the damper cover 32,
A bush 54 for supporting both members is provided in the radial gap. Thereby, the eccentricity between the flywheel 10 and the drive plate 21 can be reduced, and the drive plate 21
The eccentricity of the lining portion of the torque limiter portion, which is centered via the shaft, is reduced. The bush 54 has a ring shape and is made of, for example, resin, and is press-fitted or bonded to any one of the plate 21, the cover 32, and the flywheel 10. The assembly procedure is as follows: the drive plate 21 and the damper cover 32
And a damper / torque limiter assembly. The damper cover 32 is centered on the flywheel 10 with the pin 36 and fixed with the bolt 37, and the damper / torque limiter assembly is attached to the flywheel 10 with the damper cover 32. Fix at the site.

In the operation of the second embodiment, the lining portion 31 is fixed to the drive plate 21 and the lining portion 3 is fixed.
1 is sandwiched by the damper cover 32, and the damper / torque limiter assembly in which the drive plate and the damper cover are centered and assembled is fixed to the flywheel 10, so that the drive plate 2
1, the lining part 31 and the flywheel 10 are concentric, and it is possible to prevent the torque limiter 30 from being eccentric at the time of assembly.

[Embodiment 3] In Embodiment 3 of the present invention, FIG.
As shown in the figure, the lining section 3 of the torque limiter 30
1 to the drive plate 21 and the lining portion 21
Is sandwiched between a flywheel 10 and a damper cover 32 that constitutes a part of the torque limiter 30, and the flywheel 10 is a bolt fastening structure between the flywheel body 11 and the flywheel plate 12. The assembling procedure is as follows. The drive plate 21, the lining portion 31, and the damper cover 32 are centered on the flywheel body 11 and assembled to form a flywheel body with a damper assembly and a torque limiter. Then, the engine and the driven side are docked. Flywheel plate 1 with fixed flywheel body with damper assembly and torque limiter fixed to crankshaft 2
2 is fastened by bolts 13. Bolts 13 access and tighten flywheel plate 12 through holes drilled in the casing of the engine assembly. Bolt 1
Reference numeral 3 denotes a bolt different from the bolt 14 for fastening the damper cover 32 to the flywheel body 11.

With respect to the operation of the third embodiment, the flywheel 10 has a bolt fastening structure between the flywheel body 11 and the flywheel plate 12, and the drive plate 21 and the lining portion 31 are centered on the flywheel body. The flywheel body 11 with the attached damper assembly and torque limiter is bolted to the flywheel plate 12, so that the drive plate 21, the lining portion 31, the flywheel 1
0 is concentric, which can prevent eccentricity at the torque limiter 30 at the time of assembly.

[Embodiment 4] In Embodiment 4 of the present invention, FIG.
As shown in FIG.
a, and the bearing 2b is fitted into the recess 2a at the tip end of the crankshaft 2, and the axial projection 3a is pushed into the inner periphery of the bearing 2b, so that between the bearing 2b and the crankshaft 2 or the axial projection 3a. And a structure provided with an elastic material 2c.

In the operation of the fourth embodiment, the axially protruding portion 3a of the driven input shaft 3 is made to protrude into the inner peripheral portion of the bearing 2b in the concave portion 2a at the tip end of the crankshaft 2, so that the torque limiter 30 is assembled at the time of assembly. Even if an eccentricity occurs with respect to the flywheel axis at the portion, the eccentricity of the driven side input shaft 3
Can be received not only by the support bearing 7 of the driven-side input shaft 3 but also by the bearing 2b in the recess 2a at the distal end of the crankshaft 2, whereby the load can be dispersed and the driven-side input shaft 3 The pry on the support bearing 7 can be reduced, and the life can be prolonged. The reason why the elastic member 2c is provided between the bearing 2b and the crankshaft 2 or the axial projection 3a is that the elastic member 2c is provided between the crankshaft 2 and the axial projection 3a of the driven input shaft 3 due to eccentricity. This is to prevent an excessive load from being generated.

Embodiment 5 In Embodiment 5 of the present invention, FIG.
As shown in the upper half, the bearing 2b is arranged in the concave portion 2a at the tip of the crankshaft 10, and the drive plate 21 is fixed at one end to the bearing inner circumference 2b and the other end to the drive plate 21 by welding or the like. The structure is supported by the drive plate support member 25 described above. The drive plate support member 25 is a member extending substantially conically.

In the operation of the fifth embodiment, the drive plate 21 to which the lining portion 31 is fixed is supported from the crankshaft 2.
The lining portion 31 is concentric with the crankshaft 2 and the flywheel 10, and can prevent eccentricity from occurring at the torque limiter 30 during assembly.

Embodiment 6 In Embodiment 6 of the present invention, FIG.
As shown in the lower half, a bearing 2b is arranged in a concave portion 2a at the tip of the crankshaft 2, and the driven plate 22 is fixed at one end to the inner periphery of the bearing 2b and the other end to the driven plate 22 by welding or the like. The structure is supported by the driven plate support member 26 described above.
The driven plate support member 26 is a member extending substantially in a conical shape.

In the operation of the sixth embodiment, since the driven plate 22 is supported from the crankshaft 2, even if eccentricity occurs at the torque limiter 30 at the time of assembly, the torsional load generated on the driven input shaft 3 due to the eccentricity. Can be received not only by the support bearing 7 of the driven input shaft 3 but also by the crankshaft 2, whereby the load can be dispersed, the torsion applied to the support bearing 7 of the driven input shaft 3 can be reduced, and Life can be extended.

Embodiments 7 to 10 of the present invention relate to a flywheel 1 connected to a crankshaft 2 of an engine.
0, a damper assembly 30 disposed in a torque transmission path between the flywheel 10 and the driven input shaft 3 and having a pair of drive plates 21, a driven plate 22, and a spring damper 23;
A torque limiter 30 which is disposed in a torque transmission path between the first and second damper assemblies 20 and has a pair of lining portions 31 and generates a slip when a torque exceeding a certain value is applied.
This is a method for reducing the misalignment that occurs in the torque limiter 30 at the time of assembling the torque fluctuation absorbing device having:

[Embodiment 7] The method for reducing the eccentricity of assembling the torque limiter portion of the torque fluctuation absorbing device according to the embodiment 7 of the present invention, as shown in FIG. The plate 22 is temporarily centered on each other with pins 51 (the pins 51 are removed after assembly), and the damper assembly 20 on which the drive plate 21 and the driven plate 22 are centered is fixed using a jig 52. The method comprises centering the crankshaft 2 on the flywheel 10 and fixing the damper assembly 20 to the flywheel 10 with a damper cover 32 constituting a part of the torque limiter 30. A method for reducing eccentricity by assembling a torque limiter section of a torque fluctuation absorbing device.

With respect to the operation of the seventh embodiment, the drive plate 21 and the driven plate 22 to which the lining portion 31 is fixed are temporarily centered on each other with pins 51, and then the damper assembly is attached to the flywheel by using a jig 52. 10 and fixed to the flywheel 10 with the damper cover 32.
1. The lining portion 31 is concentric with the crankshaft 2 and the flywheel 10, and can prevent the torque limiter 30 from being eccentric at the time of assembly.

[Embodiment 8] The method for reducing the eccentricity of assembling the torque limiter portion of the torque fluctuation absorbing device according to the eighth embodiment of the present invention is to fly the drive plate 21 to which the lining portion 31 is fixed, as shown in FIG. Jig 53 on wheel 10
Then, the damper assembly centered with respect to the flywheel 10 is fixed to the flywheel 10 with the damper cover 32 constituting a part of the torque limiter 30.

With respect to the operation of the eighth embodiment, the drive plate 21 to which the lining portion 31 is fixed is centered on the flywheel 10 with a jig, and then the damper assembly is fixed to the flywheel 10 with the damper cover 32. The drive plate 21 and the lining portion 31 are concentric with the crankshaft 2 and the flywheel 10, so that eccentricity can be prevented from occurring in the torque limiter 30 during assembly.

[Embodiment 9] The eccentricity reducing method for assembling the torque limiter portion of the torque fluctuation absorbing device according to the ninth embodiment of the present invention is shown in FIG.
After the engine and the driven side are docked, the torque fluctuation absorbing device 1 is forcibly caused to resonate by control to cause the torque limiter 30 to slip.

In the operation of the ninth embodiment, after the engine and the driven side are docked, resonance is forcibly generated by control to cause the torque limiter 30 to slip. Plate 2 with lining in the direction to reduce eccentricity
Even if 1 moves and eccentricity occurs in the torque limiter 30 at the time of assembly, automatic alignment is performed.

[Embodiment 10] The method for reducing the eccentricity of assembling the torque limiter portion of the torque fluctuation absorbing apparatus according to the tenth embodiment of the present invention is described below. After docking, the slipping torque of the torque limiter 30 is temporarily reduced (this reduction method can be performed by turning on and off the clutch with a clutch or the like added) to cause the torque limiter 30 to slip. , Consisting of a method.

The operation of the tenth embodiment is as follows. After the engine and the driven side are docked, the torque at which the slip of the torque limiter 30 is reduced is temporarily reduced.
0, the drive plate 21 with the lining part moves in a direction in which the eccentricity in the lining part 31 is reduced while the slip is occurring, and the eccentricity occurs in the torque limiter 30 at the time of assembly. Even self-aligning. After the slip, the torque generated by the torque limiter 30 is returned to the original value again.

[0033]

According to the structure and method for reducing the eccentricity of assembling the torque limiter portion of the torque fluctuation absorbing device according to any one of claims 1 to 10, the drive plate, the lining portion and the flywheel are concentric, and The occurrence of eccentricity at the torque limiter portion can be reduced or the load can be dispersed. This allows the driven side bearing,
The performance of the bush and the oil seal can be improved, the bush seizure resistance of the crankshaft can be improved, and the eccentricity management of assembling the torque limiter portion is not required.

[Brief description of the drawings]

FIG. 1 is a sectional view of an eccentricity reducing structure in which a torque limiter unit of a torque fluctuation absorbing device according to a first embodiment of the present invention is assembled.

FIG. 2 is a cross-sectional view of a torque limiter unit assembly eccentricity reducing structure of a torque fluctuation absorbing device according to a second embodiment of the present invention.

FIG. 3 is a sectional view of an eccentricity reducing structure in which a torque limiter unit is assembled in a torque fluctuation absorbing device according to a third embodiment of the present invention.

FIG. 4 is a sectional view of an eccentricity reducing structure in which a torque limiter unit is assembled in a torque fluctuation absorbing device according to a fourth embodiment of the present invention.

FIG. 5 is a half sectional view of an eccentricity reducing structure in which a torque limiter unit of a torque fluctuation absorbing device according to a fifth embodiment of the present invention is assembled, and a lower half of the figure is a torque according to a sixth embodiment of the present invention. It is a half sectional view of a torque limiter part installation eccentricity reduction structure of a fluctuation absorption device.

FIG. 6 is a cross-sectional view of a torque fluctuation absorbing device assembled by a method for reducing eccentricity of a torque limiter unit of a torque fluctuation absorbing device according to a seventh embodiment of the present invention.

FIG. 7 is a cross-sectional view of a torque fluctuation absorbing device assembled by a method of reducing eccentricity in assembling a torque limiter unit of a torque fluctuation absorbing device according to an eighth embodiment of the present invention.

FIG. 8 is a front view of a torque fluctuation absorbing device applicable to any of the embodiments of the present invention.

FIG. 9 is a sectional view of a conventional torque fluctuation absorbing device.

FIG. 10 is a sectional view showing a method of assembling a conventional torque fluctuation absorbing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Torque fluctuation absorbing device 2 Crankshaft 2a Tip recess 2b Bearing 2c Elastic member 3 Driven input shaft 3a Axial protrusion 7 Driven side bearing 10 Flywheel 11 Flywheel body 12 Flywheel plate 13 Bolt 20 Damper assembly 21 Drive plate Reference Signs List 22 driven plate 22a hub 23 bush 24 spring damper 25 drive plate support member 26 driven plate support member 30 torque limiter 31 lining portion 32 damper cover 33 holding plate 34 disc spring 35 lining support plate 36 pin 37 bolt 50 jig 51 pin 52 jig Tool 53 Jig 54 Bush

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Kojima 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Yuji 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation ( 72) Inventor Masatoshi Adachi 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Tomohiro Saeki 2-1-1 Asahimachi, Kariya City Aichi Prefecture Inside Aisin Seiki Co., Ltd. (72) Inventor Minami Nakane Takashi 2-1-1 Asahi-cho, Kariya City, Aichi Prefecture Aisin Seiki Co., Ltd.

Claims (10)

[Claims] 1. A damper assembly comprising: a flywheel connected to a crankshaft of an engine; and a pair of a drive plate, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, It is a structure for reducing the misalignment occurring in the torque limiter portion during assembly, separating the lining portion of the torque limiter from the drive plate of the damper, providing a lining support plate in the torque limiter, and Fix to the support plate And the lining portion is sandwiched between the drive plates, the drive plate and the lining portion are centered and assembled to form a damper / torque limiter assembly, and the lining support plate is centered on the flywheel. A damper / torque limiter assembly fixed to the flywheel at the lining support plate portion, the eccentricity reducing structure of a torque limiter assembly of a torque fluctuation absorber. 2. A damper assembly comprising: a flywheel connected to a crankshaft of an engine; and a pair of a drive plate, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, A structure for reducing misalignment occurring in a torque limiter portion at the time of assembly, wherein the lining portion of the torque limiter is fixed to the drive plate of the damper, and a damper cover is provided on the torque limiter, and the lining portion is fixed to the damper. With the structure sandwiched by the cover The drive plate and the damper cover are centered and assembled to form a damper / torque limiter assembly. The damper cover is centered on the flywheel, and the damper / torque limiter assembly is mounted on the flywheel. The eccentricity reduction structure that is fixed at the part and assembled with the torque limiter part of the torque fluctuation absorber. 3. A damper assembly comprising: a flywheel connected to a crankshaft of an engine; and a pair of a drive plate, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, A structure for reducing misalignment occurring in a torque limiter portion at the time of assembly, wherein the lining portion of the torque limiter is fixed to a drive plate, and the damper cover and the flywheel form a part of the lining portion of the torque limiter. And fly fly The drive wheel, the lining portion, and the damper cover are centered on the flywheel body and assembled to form a flywheel body with a damper assembly and torque limiter. The engine and the driven side are docked and fixed, and the flywheel body with the damper assembly / torque limiter is bolted to the flywheel plate fixed to the crankshaft. Eccentricity reduction structure with torque limiter assembly. 4. A damper assembly comprising: a flywheel connected to a crankshaft of an engine; and a pair of a drive plate, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, A structure for reducing misalignment occurring in a torque limiter portion at the time of assembling, wherein an axial projection is provided at a tip of the driven side input shaft, and a bearing is fitted into a tip recess of the crankshaft, and the axial projection is formed. Part into the inner periphery of the bearing, the bearing, An eccentricity reducing structure for assembling a torque limiter portion of a torque fluctuation absorbing device, wherein an elastic material is provided between the crankshaft and the axially projecting portion. 5. A damper assembly having a flywheel connected to a crankshaft of an engine, a pair of drive plates, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, A structure for reducing misalignment occurring in a torque limiter portion at the time of assembly, wherein a bearing is arranged in a concave portion of the crankshaft, one end of the drive plate is fitted to the inner periphery of the bearing, and the other end is fitted to the drive plate. Supported by a fixed drive plate support The eccentricity reduction structure of the torque limiter part of the torque fluctuation absorbing device. 6. A damper assembly comprising: a flywheel connected to a crankshaft of an engine; and a pair of a drive plate, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, A structure for reducing misalignment occurring in a torque limiter portion at the time of assembling, wherein a bearing is disposed in a concave portion at a tip portion of the crankshaft, and the driven plate has one end fitted to the inner periphery of the bearing and the other end having the other end. Driven plate support member fixed to the driven plate Therefore, the eccentricity reducing structure for supporting the torque limiter portion of the torque fluctuation absorbing device supported. 7. A damper assembly having a flywheel connected to a crankshaft of an engine, and a pair of a drive plate, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, A method for reducing misalignment occurring in a torque limiter portion at the time of assembling, wherein the drive plate and the driven plate to which the lining portion is fixed are temporarily centered with each other with a pin, and then the drive plate and the driven Said plate is centered The emissions per assembly using a jig was centered on the flywheel, to fix the damper assembly to the flywheel at the damper cover that forms a part of the torque limiter,
A method for reducing eccentricity by assembling a torque limiter section of a torque fluctuation absorbing device. 8. A damper assembly having a flywheel connected to a crankshaft of an engine, a pair of drive plates, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, A method for reducing misalignment occurring in a torque limiter portion at the time of assembly, wherein the drive plate to which the lining portion is fixed is centered on the flywheel with a jig, and then is centered with respect to the flywheel. Connect the damper assembly to the torque limiter. Fixed to the flywheel at the damper cover that forms a part of the terpolymer, the eccentric reduced assembly method torque limiter of a torque fluctuation absorber. 9. A damper assembly having a flywheel connected to a crankshaft of an engine, a pair of drive plates, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, A method for reducing a misalignment generated in a torque limiter portion during assembly, comprising: docking the engine and the driven side, forcibly causing resonance by control to cause slippage in the torque limiter, A method for reducing eccentricity in assembling the torque limiter section of the device. 10. A damper assembly having a flywheel connected to a crankshaft of an engine, and a pair of a drive plate, a driven plate, and a spring damper disposed in a torque transmission path between the flywheel and a driven input shaft. And a torque limiter disposed on a torque transmission path between the flywheel and the damper assembly and having a pair of lining portions and causing a slip when a torque of a certain value or more is applied, A method for reducing a misalignment generated in a torque limiter portion during assembly, wherein after the engine and the driven side are docked, slippage generated torque of the torque limiter is temporarily reduced to cause slippage in the torque limiter. , Torque limiter for torque fluctuation absorber -A method for reducing eccentricity when mounting parts